We just reflected upon Viktor's electronic circuit the chat in a room. Opto separates the electronic circuit from the port already there. Do not stretch the shocking one drawn to the house of the fet and a nutriment branch of the coil causes an experience. I succeeded once already, the thing affected tiny one badly . If I suspect it well because of the port detached B axis your output, then it's okay, then this like this good.

I would be able to imagine a mechanics like that than the hard disk a head mover's part, only into stronger export. But there H-bridge-? would be needed already and possibly PWM es nutriment, at what coil with smaller induction, PWM es current control would be needed because of the avoidance of getting warm only. To this I am little already, but than an idea would not be bad according to me. He would knock quickly.

Thanks to your help I have success this time – the image is dot perfect to the laser image with exactly the same GCode used and it took exactly the same amount of time to produce with the magnet as it took with the laser (80 min for 106mmx130mm with 0.4mm stepover)

Quote (sanyi84)

I would be able to imagine a mechanics like that than the hard disk a head mover's part, only into stronger export. But there H-bridge-? would be needed already and possibly PWM es nutriment, at what coil with smaller induction, PWM es current control would be needed because of the avoidance of getting warm only. To this I am little already, but than an idea would not be bad according to me. He would knock quickly.

The Roland Metaza uses a legacy impact printer head (9 wire). It only uses one wire at a time and the wires have tungsten tips but something like this would be easy to set-up (just wish I had kept some of my old printer parts)

A bar worked but was before it i had one 7414, 2 drawn solenoiddal I solved it, but better let the springy retraction, essence not stick up mechanicswise into the house of the solenoid, cannot be magnetized a spacer is needed. 5-8 Hz-t I managed to bring it out from him, the magnetic collapses slowly in the coil space. If my machine is ready possibly I start it single PWM es into an electronic circuit what is able to work with bigger velocity. Lpt which can be modulated naturally from a port. Test the access anyway 5 v of os with a switch sign, no direct lpt first, it would be set before it one 74 14 you are right an opto . Viktor just works on this.

If it is of any interest I am using a 24 Volt rated coil but I am pulsing it at 48 Volts and using a 1.5mm stroke length. I can now draw a 168mm line of 554 dots (spaced 0.3mm) in 1 minute which approximates to an impact rate of 9 Hz. There may be some room for improvement here but I think that the mass of the plunger is going to be the limiting factor with any design of impact tool.

Quote (Béni)

Try to use M7-M8/M9! This is better than M3/M5.

I am using the (imaginary) B Axis direction pin with the GCode B1 to energise the magnet and B0 to turn it off again - this is much faster than the M Codes although perhaps not quite so simple to use. The B Axis set in Mach motor tuning has 1 step per unit with Vel. and Acc. set to maximum.

First try with a piece of acrylic. Like all halftones you need to be some distance from the image to get the best effect and the end result, shown here, is far from being perfect. It does, however, look exactly like the image shown in Infanview so now I have to experiment with different settings and gain some practical experience to produce an image and a group of settings that I am satisfied with.

This looked really good as I took it off the machine - when I photographed it and looked in detail, then I noticed the repetitive banding which spoils it completely. Winston Churchill once said “success consists of going from failure to failure without loss of enthusiasm” – I think I now know what he meant – I have just placed another blank on the machine and in 2 hours time I will find out.

It took 2.5 hours to complete the 90,000 dots and although I have got rid of the repetitive banding, I must have set the contrast level just a bit too high and as a result, lost some of the important detail.

No, the banding was not a mechanical issue. It was my own mistake. Although I don't remember doing it I must have re-sized the image after it had been processed. Re-sizing or changing the aspect ratio creates a form of Moire patterning where the dots form into groups, lines or patterns. Laser images created with Photograv will often suffer banding if altered in any way.

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Nice video with an interesting machine. What is the opinion of guys about DotG?

It is early days yet but they seem quite impressed. One member says he is not able to produce anything good yet but perhaps he needs to practice a bit.

Tweakie.Success consists of going from failure to failure without loss of enthusiasm.

tweakie, so the best way is first resize and making the process only at the end? Not because The DotG was coming from this forum, but I'm still surprized what useful it is, withal it's free. Hope they can use it, Beni was created a great software.H1i.hu

so the best way is first resize and making the process only at the end?

Yes, once I sized the image first I had no problem with 'banding' on the second attempt.

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Not because The DotG was coming from this forum, but I'm still surprized what useful it is, withal it's free. Hope they can use it, Beni was created a great software.

Beni has indeed created an excellent piece of software. As you have noticed the Phlat Forum guys have very unusual machines (these were originally designed for cutting 'Depron' foam for RC model aircraft construction) but they are always looking for new ideas and new ways to use their machines. I hope they find DotG useful as well.

Tweakie.Success consists of going from failure to failure without loss of enthusiasm.